WMSIC Electronic Components

SXN SMNR4020-2.2UH Inductor SMNR4020

ModelSMNR4020-2.2UH
PackageSMD,4x4x2mm
BrandSXN
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
SXN SMNR4020-2.2UH
Type
SXN
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
SXN
Electronic Component
SMNR4020-2.2UH
Electronic Component
1
Package
SMD,4x4x2mm
Electronic Component
Power Inductor
Electronic Component
±20%
Electronic Component
0.135g
Inductor
2.2uH
Electronic Component
1
Electronic Component
BM0264968630
Current
3.4A
Resistor(DCR)
46mΩ
Electronic Component
Electronic Component
Electronic Component
3000
and Current(Isat)
3.4A

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

SMNR4020-2.2UH功率电感产品概述

一、产品基本信息

SMNR4020-2.2UH是国产品牌顺翔诺(SXN) 推出的一款小型化表面贴装(SMD)功率电感,型号命名规则清晰:“SMNR”代表系列定位,“4020”对应封装尺寸(4.0mm×4.0mm×2.0mm),“2.2UH”明确核心电感值。作为中低功率电源管理场景的通用型产品,其设计兼顾了小型化、电流承载能力与成本控制,适配多数便携及嵌入式设备的供电需求。

二、核心电气参数解析

功率电感的性能核心取决于电气参数,SMNR4020-2.2UH的关键参数具备明确的实用价值:

  1. 电感值与精度:标称电感值2.2μH,精度±20%(实际范围1.76μH~2.64μH)。该精度满足一般DC-DC转换电路的需求,无需额外高精度补偿,降低了电路设计复杂度。
  2. 额定电流(Irms):3.4A(有效值),指电感连续工作时允许通过的最大电流,此时电感无过热或性能衰减风险。
  3. 饱和电流(Isat):3.4A,与额定电流完全一致。饱和电流是电感值下降至初始值30%时的临界电流,两者匹配意味着设备在3.4A连续工作时,磁芯不会饱和,电感值稳定,避免电路纹波增大、效率下降等问题。
  4. 直流电阻(DCR):46mΩ(毫欧),属于低阻设计。低DCR可显著降低铜损(功率损耗=I²×R),例如3.4A电流下损耗仅约0.53W,减少设备发热,提升电源转换效率。

三、物理特性与封装优势

SMNR4020-2.2UH采用4×4×2mm SMD封装,具有以下物理特性优势:

  • 小型化设计:4mm×4mm贴装面积+2mm高度,适配高密度PCB布局,尤其适合手机、智能手表等便携设备对空间的严格要求。
  • 自动化兼容:SMD封装支持贴片生产线同步贴装,提高生产效率,降低人工成本与焊接缺陷率。
  • 结构可靠性:推测采用绕线式结构(适配中低功率电流),磁芯材料经过优化,3.4A电流下无明显磁饱和,抗振动、抗冲击性能符合电子设备工业级标准。

四、典型应用场景

结合参数与封装特性,SMNR4020-2.2UH的典型应用场景包括:

  1. 便携式电子设备:手机、平板、智能手表的DC-DC降压模块(为CPU、内存供电),小型化封装节省设备内部空间。
  2. IoT与嵌入式系统:智能家居(智能音箱、传感器节点)、工业物联网网关的电源管理单元(PMU),稳定3.4A电流满足小功率模块供电需求。
  3. 通信设备:路由器、交换机的电源电路(为WiFi模块、接口芯片供电),低DCR提升电源效率,减少设备发热。
  4. 消费电子配件:快充充电器、移动电源的升压/降压电路,适配USB PD快充协议的小功率输出场景。

五、产品优势总结

SMNR4020-2.2UH在同类产品中具备明显的性价比优势:

  • 电流与饱和匹配:额定电流与饱和电流一致,工作稳定性高,避免磁饱和导致的电路故障。
  • 低损耗高效率:46mΩ DCR降低铜损,提升电源转换效率,适合功耗敏感设备。
  • 小型化高密度:4×4×2mm封装适配高密度PCB,满足便携设备空间要求。
  • 国产性价比:顺翔诺作为国产品牌,成本可控,适合量产需求,可替代部分进口同规格产品。

六、选型参考提示

若实际电流需求略高于3.4A,可考虑同系列更高电流型号;若电感精度要求高于±20%,需结合电路增加补偿电路。但对于多数中低功率电源管理场景,SMNR4020-2.2UH已能平衡性能与成本需求。

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